CN-122029889-A - Communication device, control method, and program

Abstract

A communication apparatus is capable of performing communication using a first channel access method and a second channel access method, the first channel access method using at least a main channel in one link and the second channel access method using at least one non-main channel different from the main channel among a plurality of channels included in the link in place of using the main channel in a case where the main channel is in a busy state, notifying another communication apparatus having a function of performing communication using the second channel access method of first information which can be used by the other communication apparatus to determine whether communication using the second channel access method is permitted, and communicating with the other communication apparatus having received the first information.

Inventors

• YOSHIKAWA YUUKI

Assignees

• 佳能株式会社

Dates

Publication Date

20260512

Application Date

20241011

Priority Date

20231016

Claims (20)

1. 1. A communication apparatus capable of performing communication using a first channel access method using at least a main channel in one link and a second channel access method using at least one non-main channel different from the main channel among a plurality of channels included in the link instead of using the main channel in a case where the main channel is in a busy state, comprising: A notifying means for notifying another communication apparatus having a function of performing communication using the second channel access method of first information which can be used by the other communication apparatus to determine whether communication using the second channel access method is permitted, and Communication means for communicating with the other communication device that received the first information.
2. 2. A communication device according to claim 1, characterized in that The first channel access method is a main channel access method for accessing a channel based on a result of carrier sense for the main channel, and The second channel access method is a non-primary channel access method for accessing a channel based on a result of carrier sensing for the non-primary channel.
3. 3. A communication device according to claim 1, characterized in that The primary channel is a primary channel specified based on one of the IEEE 802.11 family of standards, and The non-primary channel is a non-primary channel specified based on at least one standard in the IEEE 802.11 family of standards.
4. 4. The communication device of claim 1, wherein The first information includes information indicating that the other communication apparatus is allowed or not allowed to perform communication using the second channel access method.
5. 5. The communication device of claim 1, wherein The first information includes information indicating a condition to be satisfied when the other communication apparatus performs communication using the second channel access method.
6. 6. The communication device of claim 1, wherein The notifying means periodically performs notification of the first information using a beacon frame specified in the IEEE 802.11 standard series.
7. 7. The communication device according to any one of claims 1 to 6, wherein The notifying section performs notification of the first information using an action frame specified in the IEEE 802.11 standard series.
8. 8. The communication device according to any one of claims 1 to 7, further comprising: and acquiring means for acquiring, from the other communication apparatus, second information that can be used to generate the first information.
9. 9. The communication device of claim 8, wherein The second information includes information for identifying communication quality of the non-primary channel.
10. 10. The communication device of claim 8, wherein The second information includes information for identifying a buffer status of communication traffic of the other communication device.
11. 11. A communication apparatus capable of performing communication using a first channel access method that uses at least a main channel in one link and a second channel access method that uses a non-main channel different from the main channel among a plurality of channels included in the link in place of using the main channel in a case where the main channel is in a busy state, comprising: Acquisition means for acquiring, from another communication apparatus, first information that can be used to determine whether or not to permit communication using the second channel access method; determining means for determining whether or not to permit communication using the second channel access method using the first information, and And communication means for communicating data with the other communication apparatus based on a result of the determination.
12. 12. A communication device according to claim 11, characterized in that The first channel access method is a main channel access method for accessing a channel based on a result of carrier sense for the main channel, and The second channel access method is a non-primary channel access method for accessing a channel based on a result of carrier sensing for the non-primary channel.
13. 13. A communication device according to claim 11, characterized in that The primary channel is a primary channel specified based on one of the IEEE 802.11 family of standards, and The non-primary channel is a non-primary channel specified based on at least one standard in the IEEE 802.11 family of standards.
14. 14. The communication device of claim 11, wherein The first information includes information indicating that the communication apparatus is allowed or not allowed to perform communication using the second channel access method.
15. 15. The communication device of claim 11, wherein The first information includes a condition to be satisfied when the communication apparatus performs communication using the first channel access method.
16. 16. The communication device of any of claims 11 to 15, wherein The acquisition means periodically acquires the first information from a beacon frame specified in the IEEE 802.11 standard series.
17. 17. The communication device of any of claims 11 to 15, wherein The acquisition means acquires the first information from an action frame specified in the IEEE 802.11 standard series.
18. 18. The communication device of any of claims 11 to 17, further comprising: Providing means for providing second information to the other communication device that can be used by the other communication device to generate the first information.
19. 19. The communication device of claim 18, wherein The second information includes information for identifying communication quality of the non-primary channel.
20. 20. The communication device of claim 18, wherein The second information includes information identifying a buffer status of communication traffic of the communication device.

Description

Communication device, control method, and program Technical Field The present disclosure relates to data communication techniques for a communication device capable of communicating using a communication link comprising a plurality of channels. Background In recent years, with an increase in data traffic, development of wireless Local Area Network (LAN) communication technology has been progressed. The Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards is known as the primary communication standard for wireless LANs. The IEEE 802.11 family of standards includes standards such as IEEE 802.11 a/b/g/n/ac/ax/be. Development of the IEEE 802.11bn standard, which is a successor to the IEEE 802.11be standard, is advancing for the purpose of further improving communication reliability. In IEEE 802.11WG (working group) which is building the IEEE 802.11bn standard, the UHR SG is intended to set the purpose and scope of the standard, and TGbn is intended to define the details of the technology to be included in the standard. Note that UHR SG is an abbreviation for ultra high reliability research group (Ultra High Reliability Study Group). Further TGbn is an abbreviation for task group bn (Task Group bn). As one of candidate technologies to be included in the IEEE 802.11bn standard, a technology of efficiently using frequency resources in a communication method using a communication link including a plurality of channels is being studied. For example, with the technique described in PTL 1, in a case where a main channel for acquiring a transmission right cannot be used, communication using another channel is used. CITATION LIST Patent literature PTL 1 U.S. Pat. No. 11696353 Disclosure of Invention Technical problem Techniques are disclosed that enable more efficient use of frequency resources in a communication system that uses a communication link that includes multiple channels. Solution to the problem A communication apparatus according to an aspect of the present disclosure is capable of performing communication using a first channel access method using at least a main channel in one link and a second channel access method using at least one non-main channel different from the main channel among a plurality of channels included in the link in place of using the main channel in a case where the main channel is in a busy state, the communication apparatus including notifying means for notifying first information to another communication apparatus having a function of performing communication using the second channel access method, the first information being capable of being used by the other communication apparatus to determine whether communication using the second channel access method is permitted, and communication means for communicating with the other communication apparatus that has received the first information. Advantageous effects of the invention According to the present disclosure, frequency resources can be more efficiently used in a communication system using a communication link including a plurality of channels. Other features and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings. Note that the same reference numbers will be used throughout the drawings to refer to the same or like components. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. Fig. 1 is a diagram illustrating a configuration example of a wireless communication system. Fig. 2A is a schematic diagram illustrating an example of a time chart when a communication apparatus transmits data. Fig. 2B is a schematic diagram illustrating an example of a time chart when a communication apparatus transmits data. Fig. 3 is a diagram illustrating an example of a flow when an AP notifies a STA whether NPCH access can be performed. Fig. 4 is a diagram illustrating an example of an NPCH Access (Access) element. Fig. 5 is a diagram illustrating an example of the NPCH operation mode notification frame action field. Fig. 6 is a diagram illustrating an example of a flow when determining whether NPCH access can be performed. Fig. 7 illustrates an example of a flow chart of a flow of channel access indicating a communication device. Fig. 8 illustrates an example of a sequence performed between communication apparatuses. Fig. 9 is a diagram illustrating an example of a flow when determining whether conditions of NPCH access can be performed. Fig. 10 is a diagram illustrating an example of an NPCH access element. Fig. 11 illustrates an example of a flow chart of a flow of channel access indicating a communication device. Fig. 12 is a diagram illustrating an example of a flow when determining whether NPCH access can be performed. Fig. 13 is a diagram illustratin